WebhookInbox

Spec sheet

Purpose

WebhookInbox receives HTTP requests and stores their data for later inspection, including for debugging HTTP callbacks.Read 11 Oct 2026 · webhookinbox.com

API

The HTTP API can create and destroy inboxes, retrieve items, and listen for new items in realtime.Read 11 Oct 2026 · webhookinbox.com

Support

The contact page directs bug reports and feature requests to its GitHub issue tracker and lists an email for commercial inquiries.Read 11 Oct 2026 · webhookinbox.com

Maker

WebhookInbox is produced by Fanout, Inc.Read 11 Oct 2026 · webhookinbox.com

Captured data

Request items can include the method, path, query, headers, body, creation time, and client IP address.Read 4 Oct 2026 · webhookinbox.com

Captured request details

Request items can include the method, path, query, headers, body, creation time, and sender IP address.Read 11 Oct 2026 · webhookinbox.com

Custom responses

Inboxes can be configured to wait for a user supplied HTTP response; if none arrives within 20 seconds, the request receives status 503.Read 11 Oct 2026 · webhookinbox.com

Expiration

Inboxes expire after their time-to-live unless refreshed, and can also be explicitly destroyed.Read 4 Oct 2026 · webhookinbox.com

Generated inbox URLs

Each inbox has a generated URL that other applications can use to send requests.Read 11 Oct 2026 · webhookinbox.com

Generated inboxes

Each inbox has a generated URL that applications can use to send requests for capture.Read 4 Oct 2026 · webhookinbox.com

Limits and expiration

Inboxes normally retain up to 100 items and are automatically destroyed when their time to live expires unless refreshed.Read 11 Oct 2026 · webhookinbox.com

Live display

Incoming request data is displayed on the website in real time.Read 4 Oct 2026 · webhookinbox.com

Live updates

The API supports long-polling and HTTP streaming to receive new items.Read 11 Oct 2026 · webhookinbox.com

Open source

WebhookInbox is open source, and the maker says users can run their own instance.Read 4 Oct 2026 · webhookinbox.com

PubSubHubbub

Inbox URLs can receive PubSubHubbub feed updates and handle subscription verification requests.Read 11 Oct 2026 · webhookinbox.com

Realtime API

The REST API can create and destroy inboxes, retrieve items, and listen for new items in real time.Read 4 Oct 2026 · webhookinbox.com

Realtime viewing

Incoming request data is displayed on the website in realtime.Read 11 Oct 2026 · webhookinbox.com

Retention limit

An inbox holds up to 100 items, with a temporary higher limit during rapid request bursts before truncation back to 100.Read 4 Oct 2026 · webhookinbox.com

Self hosting

WebhookInbox is open source, and the maker says users can run their own instance.Read 11 Oct 2026 · webhookinbox.com

Technology

The project is built with Django, Redis, Pushpin, and AngularJS.Read 11 Oct 2026 · webhookinbox.com

Where Specifiction places it

• Webhook Management Software#29 of 296.9